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arXiv 2202.10083math.GR
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关于阿贝尔群的图积的半完备性的一个注记

A note on semicompleteness of graph products of abelian groups

Philip Möller, Olga Varghese

摘要:

本文证明了由阿贝尔群生成的图积$G_Γ$是半完全的--即由$G_Γ$的阿贝尔化所诱导的自然同态${\rm Aut}(G_Γ)\to{\rm Aut}(G_Γ^{ab})$的核等于内自同构--当且仅当$Γ$没有分离星.

英文摘要:

In this short note we prove that a graph product $G_Γ$ of finitely generated abelian groups is semicomplete -- that is the kernel of the natural homomorphism ${\rm Aut}(G_Γ)\to{\rm Aut}(G_Γ^{ab})$ induced by the abelianization of $G_Γ$ is equal to the inner automorphisms -- if and only if $Γ$ does not have a separating star.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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